... Professional engineers Quality certificate: ISO9001:2008 Stamping Fabrication Part Through its CNC punches and CNC bending ... distributors, paper shredders and so on. MaterialCarbon steel; Stainless steel, aluminum alloy; Brass alloy; Tinplate, copper; ... Gray iron; Ductile iron; Malleable iron; Tungsten steel, etc.Machining processesMetal fabrication, machining, welding, forming, shaping, punching, ...